Ok i'll give it my best shot. This is the first time I'd be arguing this debate. I'm pretty uneducated, so If I break your rules in some way, please let me know. I'll try to endeavor to express my opinion in respect to your rules.

How do you define God? Please answer this question. It could give me useful information in constructing my next argument. If you don't have any proof of IMPOSSIBLE miracles, then I would postulate that you can't prove he exists. I capitalized that because I am not interested in hearing any 1 in a trillion shot miracles. I am being very literal to completely breaking the laws of physics, not to how we think the laws of physics was broken. I can prove that an apple exists by showing you the apple. I can prove that the world is round by theoretically(this isn't semantics, it just means it's not practical) taking you into a spaceship and leaving earth's orbit to see it from an outside point of view which would indicate it being round. You have to literally prove to me God exists. If can't then you are wrong without using the qualifier "I believe".